A very quick read of Fetch and there's a lot of buy/rent involved v Netflix a flat $12 mth or something like that. Fetch seems a lot like the Optus equivalent of Foxtel that died. A pathological hatred for Optus and Telstra customer disservice puts me off Fetch.

I have a dislike of piracy so a bit negative on Kodi. Plus it isn't free as there's around $10/month vpn cost plus a crap interface.

Netflix has very good content.

The Fetch TV can be had free from Optus($80 plan). No need for any add on programmes. Netflix is on the Fetch TV.

The catch up TV and Netflix is built into many of the latest PVRs. Humax 2tune does a similar thing, but it cost $300. The Humax 4Tune does have the extra tuners, but cost $400. The mightyFetch TV cost $400 from some retailers.

Its when you use the tv as a mirror to whatever device you are using. Older tvs need an add-on gadget like chrome cast or apple tv. It plugs into your TV and acts as a receiver.
I have a spare chrome cast laying around if you are interested?

So with Mi you use the Mi remote but for Chromecast you drive it via a tablet ?